Machine for treating hides or skins.



,5 ,'PATBNTED MAY 9, 1905.

P. A. PARKHURsr. MACHINE FOR TREATING Hlnso SKINS. Y

APYLIOATION FILED NOV. 5, 1903.

3 SHEETS-SHEET 1,

' 'inve/@5a ariane/@0% PATBNTED MAY 9, 1905.

F.A.PARKHURST. MAGHINBAPOR HEATING` HIDEs 0R SKINS.

APPLICATION FILED NOV.5, 1903.

3 SHEETS-SHEET 2.

PATENTED MAY 9, 1905. P. A. PARKHURST.' MACHINE FOR TREATING HIDBs 0R SKINS.

'APPLICATION FILED NOV.5.1903.

3 SHEETS-SHEET 3.

" @ffm 75l/Zia 65565.

UNITED STATES Patented May 9, 1905.

PATENT OFFICE.

MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF WEST VIRGINIA.

MACHINE FOR TREATING HIDES OR SKINS.

SPECIFICATION forming part of Letters Patent No. 789,229, dated May 9, 1905.

Application filed November 5, 1903. Serial No. 179,879.

To {1J/Z whom, t may concern:

Be it known that I, FREDERIC A. PARK- nUnsT, acitizen of the United States, residing in Portland, in the county of Cumberland and State of Maine, have invented an Improvement in Machines forTreating Hides or Skins, of which the following description, in connection with the accompanying drawings, is a speciiication, likecharacters on the drawings representing like parts.

This invention relates to a machine for treating hides, skins, and leather, and has for its object to provide a simple and efiicient machine of the class referred to which is especially adapted for iieshing hides and skins.

In the machine herein shown as embodying this invention a bed-roll is moved into and out of its operative position by power, as will be described, and has coperating with it a feed or pinch roll carried by levers which are oscillated by rotatable cams to move the said pinch-roll toward and away from the bed-roll, as will be described.

Other features of this invention will be pointed out in the claims at the end of this specification.

Figure 1 is a front elevation with parts broken away of a machine embodying this invention; Fig. 2, a vertical section of the machine shown in Fig. 1, taken on the line 2 2 and looking toward the right; Fig. 3, a section similar to Fig. 2, showing the bed-roll and pinch-roll in their withdrawn positions; and Figs. 4 and 5, details to be referred to.

In the machine herein shown as embodying this invention the bed-roll e is power-operated, and for this purpose said bed-roll is journaled in boxes I), (indicated by dotted lines, Figs. 2 and 3,) which slide in substantially horizontal guideways c in the uprights or side frames (Z e of the machine and are joined by connecting-rods f to disks or wheels r, provided with peripheral teeth to form gears, which are fast on shafts L, supported by the side frames Z c.

The gears g are driven by pinions ,7' on a shaft having bearings in the side frames d c of the machine. The shaft 7c has keyed upon it a clutch sleeve or member m, which coperates with a clutch member a, fast on a shaft 0, having bearings in the upright arms p of a bracket q, attached to the side frame e. The shaft o has fast on it a gear r, which meshes with and is driven by a pinion s on a main shaft having bearings in the arms o and provided, as shown, with fast and loose pulleys c w. The clutch member n is fast on the shaft o, and when the clutch member m is engaged with it the shaft rz is coupled to the shaft 0 and is rotated thereby to effect reciprocation of the bed-roll a. The shaft L, supported by the side frame c, has fast on it a disk 7, (see Fig. 5,) having an annular rim 8, provided with substantially diametrical slots or recesses 9 10, with which cooperate a stud or roller 12 (see Fig. 1) on a fork or arm of the lever 13, which operates the clutch member m, said lever being pivoted at 14 to the bracket q and connected at its lower end by link 15 with a treadle-lever 16, provided, as herein shown, with a counterweight 17 on an arm 18, which holds the roller 12 in engagement with the flange 8 and serves to move said roller into the slots or recesses 9 10 when in the revolution of the disk 7 either slot or recess is brought into line with the roller 12. The flange 8 on the disk 7 acts to maintain the clutch member m in engagement with the clutch member aduring each half of the revolution of the shafts 7b, thereby permitting the operator to remove his foot from the treadle after the latter has been depressed to start the machine in operation. rlhe bed-roll a, cooperates with a rotatable tool, herein shown as a bladed cylinder or roll 20, which in the present instance is mounted in bearings in the sideyframes of the machine, and also cooperates with two feed-rolls 21 22, which may be made plain or luted, as herein shown. The feed-roll 2l is journaled in boxes 24e in the side frames d e of the machine and is practically stationary, although it is free to respond to different thicknesses of the hide or skin, being backed by a helical spring` 25, which encircles a threaded rod 26. The pressure or tension of the spring '25 may be adchine.

justed, as shown, by the sleeve 27 and cheeknuts 28 in a manner well understood.`

The feed-roll 22, which may be designated the pinch-roll, is mounted in boxes 30 in the slotted or forked ends of levers 31, pivoted at 32 to uprights 33 on the side frames 0l e, the said levers at their opposite ends having studs or rollers 34, whichenter path-cams 35 (see dotted lines, Figs. 2 and 3, and full lines, Fig. 4) on one face of the gears y. The cams 35 are suitably shaped to turn the levers 31 on their pivots in a vertical direction and raise and lower the pinch-roll 22 with relation to the bed-roll a, the said cams being properly timed to permit the bed-roll in its reciprocation to Vpass below the pinch-roll when the latter is elevated. The cams 35 turn the levers so as to lower the pinch-roll 22 and cause it to engage the hide or skin when the bed-roll is in its operative position (shown in Fig. 2) and to raise the pinch-roll 22 into the position shown in Fig. 3 when the bed-roll is in the position shown in Fig. 3, which latter position may be termed the starting position of the machine. The knife-cylinder may be rotated by a pulle;7 40 on its shaft` and the feed-roll 21 may be driven from asprocket-Wheel 41, secured to or forming part of the clutch member 01,. The bedroll a may be driven from the feed-roll 21 by a gear 42 on the shaft of the said feed-roll 21, which meshes with a gear 43 on the shaft of the bed-roll c when the latter is in its operative or working position, said gears being shown in Fig. 1 at the left-hand end of the machine. The pinch-roll 22 is driven from the bed-roll a by a gear 44 on the shaft of the bed-roll, which meshes with a gear 45 on the shaft of the pinch-roll 22 when the latter and the bed-roll are in their working or operative position, (shown in Fig. 2,) the gears 44 45 being shown at the right-hand end of the ma- (See Fig. 1

The machine is provided, as shown, with the usual guard or shield 47 for the knifecylinder. The pinch-roll 22 is backed by helical springs 49, which encircle threaded rods 50, and the tension or pressure of which is adjusted by means of the sleeve 51 and check-nuts 52. The operation of the machine herein shown may be readily urderstood by reference to Figs. 2 and 3.

Referring to Fig. 3, the machine is represented in what may be considered its starting positiongnamely, with the bed-roll withdrawn from the knife-cylinder and the pinch-roll 22 elevated. When the parts are in the position shown in Fig. 3, a hide or skin 48 is placed over the bed-roll by the operator standing at the front of the machine. In practice about one-half of the hide or skin hangs below the bed-roll. The operator depresses the foottreadle 16 and withdraws the roller 12 from one notch or recess, as 9, and engages the clutch memberm with the member n, thereby coupling the shaft 7c to the shaft 0 and start-a ing the machine in operation.

During one-half of a revolution vof the shaft L the bedroll is moved forward into the position shown in Fig. 2 by the gears g and the connecting-rods f, and during this hal f-revolution of the said gears the cams 35 turn the pinch-roll-carrying levers 31 and move the pinch-roll 22 down into the path of movement of the bed-roll and into engagement with the hide or skin on the bed-roll. The cams 35 are properly timed to cause the pinch-roll to engage the hide or skin at or about the time the bed-roll has reached the limit of its forward movement, at which time the hide or skin on the bed-roll is also engaged by the feed-roll 21 and is in position to be acted upon by the knife-cylinder, which, as usual in machines of this class, is revolved in a direction opposite to the movement of the hide or skin as the latter is fed out of the machine.

When the bed-roll a and pinch-roll 22 have been brought into operative position by a halfrevolution of the gears g, the latter are rendered stationary by disengagement of the clutch member m from themember n, which is automatically effected by the counterweight 17, or it may be by a spring in lieu of said weight, and which movement is permitted when the recess or notch 1() comes in line with the roller 12.

After substantially one-half of the hide or skin has been acted upon by the knife-cylinder and fed out of the machine the operator again depresses the foot-treadle and starts the machine in operation to complete the revolution of the shafts L. During this half-revolution of the shafts the pinch-roll 22 is elevated and the bed-roll a is moved back into its starting position, and when the gears g have made a complete revolution the notches 9 in the flanged disk 7 permit the clutch member m to be disengaged from the member n, and the gears are thereby arrested in their movement. The operator then reverses the hide or skin and again starts the machine in operation to effect working of the remaining or untreated portion of the hide or skin.

In the present instance the toothed disks, wheels, or gears g are mounted on separate short shafts It; but it is evident a single shaft L, extended across the machine, may be used; but I prefer the two short shafts, as the space between the side frames is left unobstructed and the operator can work with more freedom.

I claim- 1. In a machine for treating hides and skins, a rotatable knife-cylinder, a reciprocating bed-roll, rotatable gears, means to connect said gears with said bed-roll, a pinch-roll cooperating with said bed-roll, levers in which said pinch-roll is mounted. cams attached to said gears to rotate therewith and acting on said levers to move the pinch-roll toward and IOO ISO

away from said bed-roll, a disk movable with said gears and provided with a flange having' substantially diametrically opposite slots or recesses, a rotatable shaft, pinions on said shaft in mesh with said gears, a driving-shaft, a clutch mechanism connecting' said drivingshaft with the shaft on which said pinions are mounted, a lever for operating said clutch, and a stud or roller movable with said lever and cooperating with said anged disk, substantially as described.

2. In a machine for treating hides and skins, a bodily-movable bed-roll, a pinch-roll coperating therewith, pivoted levers in which said pinch-roll is mounted at one side of the pivots thereof, and rotatable cams cooperating with the said levers on the opposite sides of their pivots, substantially as and for the purpose specified.

3. In a machine for treating hides and skins, a reciprocating work support, a rotatable shaft, mechanism connecting said work-support with saidshaft to produce reciprocation of said work-support by the rotation of said shaft, a pinch-roll movable into and out of the path ot' movement of said work-support, and means to eifect the movement of said pinchroll into and out of the said path to permit the work-support to be moved past the said pinchrol 4. In amachine for treating hides and skins, a reciprocating work-support, rotatable disks,

connecting-rods joining said support with said disks, means to rotate said disks, a pinch-roll cooperating with said Work-support and movable into and out of the path of movement of said work-support, and means to move said pinch-roll into and dut of the path of movement of said Work-support, substantially as described.

5. In a machine for treating hides and skins, a reciprocating Work-support, rotatable disks or Wheels, connecting-rods joining said support with said disks or Wheels, means to rotate said disks, a pinch-roll coperating with said work-support, pivoted levers in which said pinch-roll is mounted, and cams to turn said levers on their pivots and move said roll toward and away from said work-support, substantially as described.

6. In a machine for treating hides and skins, in combination, a movable support for the hide or skin, means to reciprocate said support, a pinch-roll, a movable support for said pinch-roll, and a cam to move said pinch-roll support, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERIC A. PARKHURST.

Witnesses:

HARRY R. VIRGIN, FRANKLIN C. PAYsoN. 

